Mysqli driver: trans_begin() gone in 3.0.3

Thanks for your replies they've set me on the right path to figure out what was happening. I was still unfamiliar with the driver stack, and checking DB_driver.php confirmed the method was there. I was getting this error.

Code:

A PHP Error was encountered

Severity: Error

Message: Call to undefined method CI_DB_mysqli_driver::trans_begin()

Filename: database/DB_driver.php

Line Number: 791

What happened is that when I was updating PhPStorm was unable to completely sync the new files with the server's document root. Once that has been forced manually everything worked.

Thank you!